This product is in effect from PAC, Ferric Chloride, aluminum salt and coagulants hydrolysis and physico-chemical process coagu-flocculation mechanism based on the thorough research to development, it sets the aluminum salt and physico-chemical process coagu-flocculation advantages, and introduced the price anion ions in a sulfuric acid, aluminum and iron ion of the form has improved and the degree of polymerization is greatly improved.